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  • Nonpathogenic organisms
  • Organisms that do not cause disease

    Nonpathogenic organisms are those that do not cause disease, harm or death to another organism. The term is usually used to describe bacteria. It describes

    Nonpathogenic organisms

    Nonpathogenic organisms

    Nonpathogenic_organisms

  • Pathogenicity island
  • chromosomally or extrachromosomally, of pathogenic organisms, but are usually absent from those nonpathogenic organisms of the same or closely related species. They

    Pathogenicity island

    Pathogenicity_island

  • Escherichia coli
  • Rod-shaped, gram-negative bacterium

    Escherichia that is commonly found in the lower intestine of warm-blooded organisms. Most E. coli strains are part of the normal microbiota of the gut, where

    Escherichia coli

    Escherichia coli

    Escherichia_coli

  • Arcobacter
  • Genus of bacteria

    from aborted bovine fetuses. They are aerotolerant, Campylobacter-like organisms, previously classified as Campylobacter. The genus Arcobacter, in fact

    Arcobacter

    Arcobacter

  • Gladys Lounsbury Hobby
  • American scientist (1910–1993)

    in 1935. She wrote her doctoral thesis on the medical uses of nonpathogenic organisms. Hobby worked for Presbyterian Hospital and the Columbia Medical

    Gladys Lounsbury Hobby

    Gladys_Lounsbury_Hobby

  • Neisseria cinerea
  • Species of bacterium

    agar and trypticase soy agar. Neisseria cinerea is classified as a nonpathogenic bacterium, but has been isolated from numerous infections including

    Neisseria cinerea

    Neisseria_cinerea

  • Bacillus subtilis
  • Catalase-positive bacterium

    The opinions were predicated on the use of nonpathogenic and nontoxicogenic strains of the respective organisms and on the use of current good manufacturing

    Bacillus subtilis

    Bacillus subtilis

    Bacillus_subtilis

  • Thiomargarita namibiensis
  • Species of bacterium

    enough to be visible to the naked eye. Thiomargarita namibiensis is nonpathogenic. Thiomargarita namibiensis is categorized as a mesophile because it

    Thiomargarita namibiensis

    Thiomargarita namibiensis

    Thiomargarita_namibiensis

  • Viridans streptococci
  • Species of bacterium

    or the Lancefield antigens of the pyogenic members of the genus. The organisms are most abundant in the mouth, and one member of the group, S. mutans

    Viridans streptococci

    Viridans streptococci

    Viridans_streptococci

  • Allorhizobium vitis
  • Species of bacterium

    "Biological Control of Crown Gall on Grapevine and Root Colonization by Nonpathogenic Rhizobium vitis Strain ARK-1". Microbes and Environments. 28 (3): 306–311

    Allorhizobium vitis

    Allorhizobium_vitis

  • Alcaligenes faecalis
  • Species of bacterium

    opportunistic infections do occur, the bacterium is generally considered nonpathogenic. When an opportunistic infection does occur, it is usually observed

    Alcaligenes faecalis

    Alcaligenes faecalis

    Alcaligenes_faecalis

  • Candida parapsilosis
  • Species of fungus

    diarrheal stool. It was first named Monilia parapsilosis and considered nonpathogenic. It was later encountered as a causative agent of sepsis in an intravenous

    Candida parapsilosis

    Candida_parapsilosis

  • Primary amoebic meningoencephalitis
  • Rare and usually fatal brain infection by a protist

    temperature (42 °C): Naegleria fowleri can grow at this temperature, but the nonpathogenic Naegleria gruberi can not. Michael Beach, a recreational waterborne

    Primary amoebic meningoencephalitis

    Primary amoebic meningoencephalitis

    Primary_amoebic_meningoencephalitis

  • Entamoeba coli
  • Species of parasitic amoeba

    Archived from the original on 2017-10-10. Retrieved 2015-12-03. "CDC - Nonpathogenic (Harmless) Intestinal Protozoa - Biology". Cdc.gov. 2015-03-17. Retrieved

    Entamoeba coli

    Entamoeba coli

    Entamoeba_coli

  • Salivary microbiome
  • Biological contents of human saliva

    The salivary microbiome consists of the nonpathogenic, commensal bacteria present in the healthy human salivary glands. It differs from the oral microbiome

    Salivary microbiome

    Salivary microbiome

    Salivary_microbiome

  • Mycobacterium indicus pranii
  • Subspecies of bacterium

    Tyagi, Anil K.; Hasnain, Seyed E. (2014). "Comparative Analyses of Nonpathogenic, Opportunistic, and Totally Pathogenic Mycobacteria Reveal Genomic and

    Mycobacterium indicus pranii

    Mycobacterium_indicus_pranii

  • Staphylococcus epidermidis
  • Species of bacterium

    acid products. In the presence of lactose, it will also produce gas. Nonpathogenic S. epidermidis unlike pathogenic S. aureus does not possess the gelatinase

    Staphylococcus epidermidis

    Staphylococcus epidermidis

    Staphylococcus_epidermidis

  • Serratia marcescens
  • Species of bacterium

    1920s. Until the 1950s, S. marcescens was erroneously believed to be a nonpathogenic "saprophyte", and its reddish coloration was used in school experiments

    Serratia marcescens

    Serratia marcescens

    Serratia_marcescens

  • Saccharomyces boulardii
  • Species of fungus

    6°F). In healthy individuals, S. boulardii is generally regarded as nonpathogenic and nonsystemic, remaining confined to the gastrointestinal tract. Henri

    Saccharomyces boulardii

    Saccharomyces boulardii

    Saccharomyces_boulardii

  • Clostridium tertium
  • Species of bacterium

    has traditionally been considered nonpathogenic, but increasingly it is being reported as a human pathogen. The organism has been associated with bacteremia

    Clostridium tertium

    Clostridium tertium

    Clostridium_tertium

  • Plant–fungus horizontal gene transfer
  • conferred virulence to P. tritici-repentis on wheat. In Fusarium, a nonpathogenic strain was experimentally converted into a pathogen and could have contributed

    Plant–fungus horizontal gene transfer

    Plant–fungus_horizontal_gene_transfer

  • Mycobacterium vaccae
  • Species of bacterium

    Mycobacterium vaccae is a nonpathogenic species of the Mycobacteriaceae family of bacteria that lives naturally in soil. Its name originates from the

    Mycobacterium vaccae

    Mycobacterium_vaccae

  • Magnaporthe grisea
  • Blast, fungal disease of rice & wheat

    (BUF1), and rosy (RSY1), have been extensively studied because they are nonpathogenic. This has been found to be due to their inability to synthesize melanin

    Magnaporthe grisea

    Magnaporthe grisea

    Magnaporthe_grisea

  • Staphylococcus carnosus
  • Species of bacterium

    Staphylococcus aureus and Staphylococcus epidermidis, S. carnosus is nonpathogenic and safely used in the food industry. Staphylococcus carnosus is classified

    Staphylococcus carnosus

    Staphylococcus_carnosus

  • Skin flora
  • Microbiota that reside on the skin

    disinfectants selects for antibiotic-resistant organisms when used in hand washing. However, many strains of organisms are resistant to some of the substances

    Skin flora

    Skin flora

    Skin_flora

  • Amoebiasis
  • Human disease caused by amoeba protists

    important to distinguish the E. histolytica cyst from the cysts of nonpathogenic intestinal protozoa such as Entamoeba coli by its appearance. E. histolytica

    Amoebiasis

    Amoebiasis

    Amoebiasis

  • Thermoplasma volcanium
  • Species of archaeon

    classifications have been made for this organism. Thermoplasma volcanium reproduces asexually via binary fission and is nonpathogenic. Thermoplasma volcanium was

    Thermoplasma volcanium

    Thermoplasma_volcanium

  • Citrobacter sedlakii
  • Species of bacterium

    H. Park; E.A. Martin; E.L. White (27 January 1998). "Isolation of a Nonpathogenic Strain of Citrobacter sedlakii Which Expresses Escherichia coli O157

    Citrobacter sedlakii

    Citrobacter_sedlakii

  • Nocardia
  • Genus of bacteria

    truly bacteria). It contains a total of 85 species. Some species are nonpathogenic, while others are responsible for nocardiosis. Nocardia species are

    Nocardia

    Nocardia

    Nocardia

  • Arabidopsis thaliana
  • Model plant species in the family Brassicaceae

    [citation needed] In general, when a plant is exposed to a pathogen, or nonpathogenic microbe, an initial response, known as PAMP-triggered immunity (PTI)

    Arabidopsis thaliana

    Arabidopsis thaliana

    Arabidopsis_thaliana

  • Glossary of phytopathology
  • Disease Progress Curve) autotroph avirulence (avr) gene avirulent (syn. nonpathogenic) axenic autoecious bacilliform bacterial streaming bactericide bacteriocin

    Glossary of phytopathology

    Glossary_of_phytopathology

  • Clostridium
  • Genus of bacteria

    how the digestive capacity of monogastric animals could be improved. Nonpathogenic strains of Clostridium may help in the treatment of diseases such as

    Clostridium

    Clostridium

    Clostridium

  • Pilus
  • Proteinaceous hair-like appendage on the surface of bacteria

    it is likely that the pathogenic strains will have pili while the nonpathogenic strains do not. The development of attachment pili may then result in

    Pilus

    Pilus

    Pilus

  • Streptococcus equinus
  • Species of bacterium

    Streptococcus equinus is a Gram-positive, nonhemolytic, nonpathogenic, lactic acid bacterium of the genus Streptococcus. It is the principal Streptococcus

    Streptococcus equinus

    Streptococcus_equinus

  • Trypanosoma
  • Genus of parasitic flagellate protist in the Kinetoplastea class

    the species Perca fluviatilis T. phedinae T. rangeli, believed to be nonpathogenic to humans T. rotatorium, in amphibians T. rugosae, in amphibians T.

    Trypanosoma

    Trypanosoma

    Trypanosoma

  • Corynebacterium
  • Genus of bacteria

    The term "diphtheroids" is used to represent corynebacteria that are nonpathogenic; for example, C. diphtheriae would be excluded.[citation needed] The

    Corynebacterium

    Corynebacterium

    Corynebacterium

  • Pseudogymnoascus destructans
  • Species of fungus

    evolutionary history of P. destructans compared to six closely related nonpathogenic species. The study published in the journal Nature Communications in

    Pseudogymnoascus destructans

    Pseudogymnoascus destructans

    Pseudogymnoascus_destructans

  • Rhodococcus equi
  • Species of bacterium

    plasmid. This portion of the plasmid is highly conserved and found in nonpathogenic Rhodococci plasmids. In addition to the conserved region, the virulence

    Rhodococcus equi

    Rhodococcus equi

    Rhodococcus_equi

  • Chytridiomycosis
  • Amphibian disease

    some species that seem to resist the infection may actually harbor a nonpathogenic form of B. dendrobatidis. Some researchers contend the focus on chytridiomycosis

    Chytridiomycosis

    Chytridiomycosis

    Chytridiomycosis

  • Frederick Twort
  • English bacteriologist

    years been trying to grow viruses in artificial media hoping to find a nonpathogenic virus, which might be the wild type of a pathogenic one, so more likely

    Frederick Twort

    Frederick Twort

    Frederick_Twort

  • Dientamoebiasis
  • Medical condition

    individuals are asymptomatic carriers of D. fragilis, pathogenic and nonpathogenic variants are proposed to exist. A study of D. fragilis isolates from

    Dientamoebiasis

    Dientamoebiasis

  • Mollicutes
  • Class of bacteria

    genitalium Ma. penetrans Mp. primatum (considered nonpathogenic) Mp. spermatophilum (considered nonpathogenic) Me. hominis causes male sterility/Genitals inflammation

    Mollicutes

    Mollicutes

    Mollicutes

  • Vibrio cholerae
  • Species of bacterium

    purification systems. Nonpathogenic strains are also present in water ecologies. The wide variety of pathogenic and nonpathogenic strains that co-exist

    Vibrio cholerae

    Vibrio cholerae

    Vibrio_cholerae

  • Neisseria
  • Genus of bacteria

    development. This genus also contains several, believed to be commensal, or nonpathogenic, species: Neisseria bacilliformis Neisseria cinerea Neisseria elongata

    Neisseria

    Neisseria

    Neisseria

  • Uterine microbiome
  • The uterine microbiome refers to the community of commensal, nonpathogenic microorganisms—including bacteria, viruses, and yeasts/fungi—present in a healthy

    Uterine microbiome

    Uterine microbiome

    Uterine_microbiome

  • Serratia
  • Genus of bacteria

    had a respiratory infection. The organism was isolated from the patient's sputum after she consumed a fig. The organisms continued to be isolated from several

    Serratia

    Serratia

    Serratia

  • Burkholderia pseudomallei
  • Species of tropical soil-dwelling bacterium

    antibiotics. For environmental specimens only, differentiation from the nonpathogenic B. thailandensis using an arabinose test is necessary (B. thailandensis

    Burkholderia pseudomallei

    Burkholderia pseudomallei

    Burkholderia_pseudomallei

  • Leptospira interrogans
  • Species of bacterium

    vaccine or therapeutic use. L. interrogans evolved from a saprophytic, nonpathogenic ancestor through gene gain and gene loss. L. interrogans evolutions

    Leptospira interrogans

    Leptospira interrogans

    Leptospira_interrogans

  • Campylobacteriosis
  • Infection by Campylobacter bacteria

    comma-shaped bacterium normally found in cattle, swine, and birds, where it is nonpathogenic, but the illness can also be caused by C. coli (also found in cattle

    Campylobacteriosis

    Campylobacteriosis

    Campylobacteriosis

  • Geosmithia morbida
  • Species of fungus

    MacManes, Matthew D (2017-12-01). "Comparative Genomics of Pathogenic and Nonpathogenic Beetle-Vectored Fungi in the Genus Geosmithia". Genome Biology and Evolution

    Geosmithia morbida

    Geosmithia morbida

    Geosmithia_morbida

  • Human microbiome
  • Microorganisms in or on human skin and biofluids

    recently the placenta was considered to be a sterile organ but commensal, nonpathogenic bacterial species and genera have been identified that reside in the

    Human microbiome

    Human microbiome

    Human_microbiome

  • Pathogenomics
  • observed in organisms such as Shigella flexneri, Salmonella enterica, and Yersinia pestis. Over time, the pseudogenes are deleted, and the organisms become

    Pathogenomics

    Pathogenomics

  • Schizosaccharomyces pombe
  • Species of yeast

    used to understand more complex organisms like mammals and in particular humans. This single cell eukaryote is nonpathogenic and easily grown and manipulated

    Schizosaccharomyces pombe

    Schizosaccharomyces pombe

    Schizosaccharomyces_pombe

  • Carbapenem-resistant enterobacteriaceae
  • Antibiotic-resistant bacteria

    Pathogenic strains can produce about 10-25 times more vesicles than a nonpathogenic strain making this highly relevant to carbapenem resistance transfer

    Carbapenem-resistant enterobacteriaceae

    Carbapenem-resistant_enterobacteriaceae

  • Diabetic foot ulcer
  • Medical condition

    into characterizing and identifying the phyla, genera, and species of nonpathogenic bacteria or other microorganisms populating these ulcers may help identify

    Diabetic foot ulcer

    Diabetic foot ulcer

    Diabetic_foot_ulcer

  • Lactococcus lactis
  • Species of bacterium

    the delivery of functional proteins because of its noninvasive and nonpathogenic characteristics. Many different expression systems of L. lactis have

    Lactococcus lactis

    Lactococcus lactis

    Lactococcus_lactis

  • Bordetella trematum
  • Species of bacterium

    total genome size is not currently known. Bordetella trematum is a nonpathogenic, opportunistic that has been isolated from human wounds. In the reported

    Bordetella trematum

    Bordetella_trematum

  • Histophilus somni
  • Species of bacteria

    probiotic bacteria for the respiratory tract. A nasal inoculation of a nonpathogenic strain of H. somni could allow for the respiratory tract mucosa to be

    Histophilus somni

    Histophilus_somni

  • Neisseria meningitidis
  • Species of bacterium that can cause meningitis

    enzyme cytochrome c oxidase. N. meningitidis is a part of the normal nonpathogenic flora in the nasopharynx of up to 8–25% of adults. It colonizes and

    Neisseria meningitidis

    Neisseria meningitidis

    Neisseria_meningitidis

  • Ultraconserved element
  • Sections of the genome experiencing minimal changes across species

    (flanking DNA) are useful for tracing the evolutionary history of groups of organisms. Another term for ultraconserved element is ultraconserved region (UCR)

    Ultraconserved element

    Ultraconserved_element

  • Blastocystosis
  • Medical condition

    studies that followed generally found that no specific "pathogenic" or nonpathogenic species of Blastocystis exists. One study investigated the subtypes

    Blastocystosis

    Blastocystosis

    Blastocystosis

  • Mervyn Gordon
  • British medical microbiologist (1872–1953)

    debating chamber after having inoculated his mouth and throat with a nonpathogenic bacterial species, collecting the dispersed bacteria on agar plates

    Mervyn Gordon

    Mervyn_Gordon

  • Mycolicibacter terrae
  • Species of bacterium

    leading to the misconception that this strain was nonpathogenic. In reality, however, infection by this organism can cause disease of the joints, tendons, lungs

    Mycolicibacter terrae

    Mycolicibacter_terrae

  • Leptospira noguchii
  • Species of bacterium

    Leptospira interrogans, the pathogenic species, and Leptospira biflexa, the nonpathogenic species. However, in 1989, it was discovered that there were 21 different

    Leptospira noguchii

    Leptospira_noguchii

  • Citrus black spot
  • Fungal disease that affects citrus fruit

    title (link) Baayen RP, Bonants PJ, Verkley G, et al. (May 2002). "Nonpathogenic Isolates of the Citrus Black Spot Fungus, Guignardia citricarpa, Identified

    Citrus black spot

    Citrus black spot

    Citrus_black_spot

  • Emerging infectious disease
  • New or rapidly increasing disease

    medical technologies: But there are also many familiar organisms formerly considered nonpathogenic that are now associated with nosocomial infections, use

    Emerging infectious disease

    Emerging infectious disease

    Emerging_infectious_disease

  • Gliotoxin
  • Chemical compound

    production of this metabolite by Candida fungi. Gliotoxin is not produced by nonpathogenic A. fischeri although A.fischeri contains a gene cluster that is homologous

    Gliotoxin

    Gliotoxin

    Gliotoxin

  • Streptomyces scabiei
  • Species of bacterium

    V.; Côté, M.; Charest, P.; Beaulieu, C. (2001). "Taxonomic Study on Nonpathogenic Streptomycetes Isolated from Common Scab Lesions on Potato Tubers".

    Streptomyces scabiei

    Streptomyces_scabiei

  • Lung microbiota
  • Community of microorganisms from the lung

    allow for the colonization of new species. The commensal bacteria are nonpathogenic and defend our airways against the pathogens. There are several possible

    Lung microbiota

    Lung_microbiota

  • Sarcocystis
  • Genus of protists in the apicomplex phylum

    ovicanis) are pathogenic; S. gigantea (S. ovifelis) and S. medusiformis are nonpathogenic. Infection with these parasites is common in the US with over 80% of

    Sarcocystis

    Sarcocystis

    Sarcocystis

  • Glossary of bird terms
  • brittle and maintain flexibility, and is thought to promote the growth of nonpathogenic fungi, to deter feather lice and some forms of keratin-eating fungi

    Glossary of bird terms

    Glossary of bird terms

    Glossary_of_bird_terms

  • Peptidoglycan recognition protein 1
  • Protein-coding gene in the species Homo sapiens

    in neutrophil killing and increased susceptibility to infection with nonpathogenic gram-positive bacteria in peptidoglycan recognition protein-S (PGRP-S)-deficient

    Peptidoglycan recognition protein 1

    Peptidoglycan recognition protein 1

    Peptidoglycan_recognition_protein_1

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  • Uniflagellate
  • a.

    Having but one flagellum; as, uniflagellate organisms.

  • Hypnocyst
  • n.

    A cyst in which some unicellular organisms temporarily inclose themselves, from which they emerge unchanged, after a period of drought or deficiency of food. In some instances, a process of spore formation seems to occur within such cysts.

  • Variability
  • n.

    The power possessed by living organisms, both animal and vegetable, of adapting themselves to modifications or changes in their environment, thus possibly giving rise to ultimate variation of structure or function.

  • Spore
  • n.

    A minute grain or germ; a small, round or ovoid body, formed in certain organisms, and by germination giving rise to a new organism; as, the reproductive spores of bacteria, etc.

  • Vaccine
  • n.

    any preparation used to render an organism immune to some disease, by inducing or increasing the natural immunity mechanisms. Prior to 1995, such preparations usually contained killed organisms of the type for which immunity was desired, and sometimes used live organisms having attenuated virulence. since that date, preparations containing only specific antigenic portions of the pathogenic organism are also used, some of which are prepared by genetic engineering techniques.

  • Unorganized
  • a.

    Not organized; being without organic structure; specifically (Biol.), not having the different tissues and organs characteristic of living organisms, nor the power of growth and development; as, the unorganized ferments. See the Note under Ferment, n., 1.

  • Homocategoric
  • a.

    Belonging to the same category of individuality; -- a morphological term applied to organisms so related.

  • Volvox
  • n.

    A genus of minute, pale-green, globular, organisms, about one fiftieth of an inch in diameter, found rolling through water, the motion being produced by minute colorless cilia. It has been considered as belonging to the flagellate Infusoria, but is now referred to the vegetable kingdom, and each globule is considered a colony of many individuals. The commonest species is Volvox globator, often called globe animalcule.

  • Thalassography
  • n.

    The study or science of the life of marine organisms.

  • Histological
  • a.

    Pertaining to histology, or to the microscopic structure of the tissues of living organisms.

  • Sterilize
  • v. t.

    To destroy all spores or germs in (an organic fluid or mixture), as by heat, so as to prevent the development of bacterial or other organisms.

  • Hexicology
  • n.

    The science which treats of the complex relations of living creatures to other organisms, and to their surrounding conditions generally.

  • Structure
  • n.

    Manner of organization; the arrangement of the different tissues or parts of animal and vegetable organisms; as, organic structure, or the structure of animals and plants; cellular structure.

  • Spontaneity
  • n.

    The tendency to undergo change, characteristic of both animal and vegetable organisms, and not restrained or cheked by the environment.

  • Schizophyte
  • n.

    One of a class of vegetable organisms, in the classification of Cohn, which includes all of the inferior forms that multiply by fission, whether they contain chlorophyll or not.

  • Homosystemic
  • a.

    Developing, in the case of multicellular organisms, from the same embryonic systems into which the secondary unit (gastrula or plant enbryo) differentiates.

  • Homodemic
  • a.

    A morphological term signifying development, in the case of multicellular organisms, from the same unit deme or unit of the inferior orders of individuality.

  • Zygomorphous
  • a.

    Symmetrical bilaterally; -- said of organisms, or parts of organisms, capable of division into two symmetrical halves only in a single plane.

  • Sarcina
  • n.

    A genus of bacteria found in various organic fluids, especially in those those of the stomach, associated with certain diseases. The individual organisms undergo division along two perpendicular partitions, so that multiplication takes place in two directions, giving groups of four cubical cells. Also used adjectively; as, a sarcina micrococcus; a sarcina group.

  • Systemless
  • a.

    Not having any of the distinct systems or types of structure, as the radiate, articulate, etc., characteristic of organic nature; as, all unicellular organisms are systemless.